If you've never heard about this Graffiti Wall then most likely you'll never just happen upon it. The Wall gives taggers the opportunity they’ve been waiting for--free reign and total freedom to say whatever they want through a few spray cans. Whether it's Free Tibet or U Suck Balls, there's beauty spray painted on every inch of this massive wall. But finding this hidden gem is the trickiest part. It's basically across from Starbucks headquarters, right behind where all these trucks are, facing the train tracks. Then you have to knock three times, and oh wait, that's someplace else. Anyway, the graffiti changes all the time, so it's just like going to a rotating gallery, but without all those snobs talking about the philosophy behind the color blue.